Wheel-truing device



Jan.

J. M. BENJAMIN WHEEL TRUING DEVICE.

Filed Aug. 8. I919 Patented Jan. 6, 1925.

JOHN M. BENJAMIN, 0F BEVERLY, MASSACHUSETTS, ASSIGNOR TO" UNITED MACHINERY CORPORATION, OF PATEBSON, NEW JERSEY, A, CORPORATION OF NEW JERSEY.

XUHEEL-TRUING I DEVICE.

Application filed August 8, 1919. Serial No. 316,107.

To all whom it may concern:

Be it known that I, J OHN M. BENJAMIN, a citizen of the United States, residing at Beverly, in the county of Essex and State of Massachusetts, have invented certain Improvements in Wheel-Truing Devices, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to heel scouring machines and refers particularly to means whereby the scouring wheel or wheels thereof can be readily trued up. It is well known that the wheels of heelscouring machines require occasional truing of the peripheries thereof, and this is sometimes done by the operator who holds a board or block faced with sandpaper against the periphery of the wheel. Machines have been constructed with movable parts which can be brought .into position for use, said parts comprising means whereby a suitably shaped sandpaper covered tool is held against the felt of the scouring wheel and automatically moved up and down.

It is diiiicult to hold a board or block in accurate position relatively to a scouring 7 plate 15 havlng a bearlng 16 for a rock shaft" wheel, and automatic mechanism of the type referred to is consideredby many operators to be in the way when not in use. I

An object of the present invention is to provide a simple attachment for a heel scouring machine which will not interfere with the ordinary use of the scouring machine, and which can quickly be shifted to position toaccurately true the wheel, or either of them when two are used.

An important feature of the invention consists of an attachment having a guide constructed and arranged to be adjustably fixed adjacent to the periphery of the scouring wheel, and a manually movable abrader slidable on said guide in the plane of rotation of the wheel in a path tangential to the wheel determined by the guide.

In the illustrated embodiment of the invention a multi-sided device may be brought to position adjacent to the periphery of the wheel to be scoured and moved up and down by hand to prevent the surface of the tool from being clogged, the attachment as a" whole being simple and easily brought into action when desired by the user of the machine. V

Another feature of the invention comprises a truing up attachment provided with a multi-sided tool which is rotatably adjustable and is provided with means-for'guiding it in a tangent path relatively to the periphery of said wheel.

These and other features of the invention, including certain details of construction and combinations of parts will now be described in connection with the accompanying drawelevation of one of the not necessary to illustrate in detail, are carried by a shaft 18 having a pulley 14 to be driven by a suitable belt.

The frame is formed or provided with a 17. A bracket 18 having a hub portion 19 clamped on the rock shaft and adjustable longitudinally of the latter, is provided with aguide 20 which receives the stem 21 of the truing device. Mounted on the upper end of the stem 21 is a block 22 of suitable mate rial such as wood covered with sandpaper,

the shape of the blockillustrated in the drawings being rectangular to providefour flat faces. Of course when the shape of the periphery of a wheel 12 is such as to require a different shape of block, said block may have its faces of any suitable transverse form. The block bears upon a shoulder 23 of the stem 21, said shoulder havinga handle 24:, a screw 25 passing through the block into the top of the stem 21 serving to clamp the block in whatever axial position is desired.

In the particular form of attachment illus trated the stem 21 is circular in cross section and the guide 20 is cylindrical. To prevent rotation of the stem in the guide the .ineicated in the CTI former is provided with a longitudinal groove 26 which receives the inner end of a screw 27 mounted in the guide. 7

To adjustably limit the extent to which the shaft 17 may be rocked and the truing wheel moved toward the scouring wheel, suitable means are provided such as an arm 28 having its hub 29 secured to the rock shaft, said arm having a screw 30 which eo-' acts with a stop or abutment 31 carried by the frame of the machine. By adjusting the screw 30 relatively to the abutment 31 any desired limit of movement of the truing block toward the wheel can be determined.

' W hen the machine has two wheels 12 as drawings, the truing tool can be applied to either one of them as indicated by comparing the full line position with the dotted line position thereof. To facilitate, this change of position each end of the shaft 1? is provided with alongitudinal groove 32 into which a screw 33 in hub 19 projects so that the truing tool can be readily detached from one position on shaft 1'5 and attached to the other end thereof and still retain the same function of having its inner extent of movement controlled by the screw 30 and abutment 31. V

Inasmuch as it is sometimes desirable to employ a metal scraper. to operate upon a waeel 12, 1 preferably mount a scraper 84 on the block 22, said scraper being clamped inits position conforming with block 22 by the screw 25.

The bracket 18 and thereby need not be left permanently upon the machine but can be applied to either end of the rock shaft 17 when desired. Said rock shaft 17 is not in a position to inter fere with the ordinary use of the heel scouring machine. .Vhen the truing device is to be used however, and is mounted on the shaft 11 the operator simply grasps the handle 24- and swings the device up to the position shown in Fig. 1 and reciprocates the block 24: with one of its facesmoving in a path or plane tangent to the periphery of the wheel, the distance of said plane from the axis of rotation of the wheel 12 being determined by the screw 30. The up-anddown movement of the block, which is in theplane of or parallel to the plane of rotation of the wheel, prevents the wearing action of the wheel 12 from being confined to any one transverse areaof the face of the block which is being used. When the different sides of the block are of the sameconall of the parts carried tour either-face can be utilized by loosening the screw 25 and rotating the block and then again clamping it by said screw.

If no scraping action is desired the sliding movement of the stem 21 mav-be limited so that the'scraper as will not come into contact with the periphery of the wheel. When said scraper is to be used the block is simply lowered farther. V

I do not limit myself to a block having four sides, as it may have a lesser'number or more i 'irov ded that each face thereof has a width and contour to conform with the width and contour of the periphery of the wheel Lobe trued' Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1.. An apparatus for truing the periphery of a scouring wheelhaving, in combination, hollow guide, an abrader having a stem slidable in the guide and aflat face to engage the wheel, means for adjusting the guide in the plane of the wheel to set the flat face of the abrader tangent to the wheel, and means for moving the abrader in the tangent path determined by said guide. I

2. An apparatus for truing scouring wheels having, in combination, a multiplesided abrader, means for rotatably supporting the abrader so that different faces can be brought around into Working position, and means for guiding the working face of the abrader in a tangential path lying in the plane of the wheel to true the wheel and prevent said working face from becoming clogged.

3. Means for truing a scouring wheel, comprising a rotatably adjustable multiple sided abrader, means for guiding it in a tangent path relatively to the periphery of said wheel, and a scraper carried by the abrader and corresponding with the abrader in contour to remove the dust caused by the latter.

4. An attachment for a-heel scouring machine comprising a rock shafthaving an arm, a guide carried by said arm, a truing tool having a stem fitting said guide, a handle being provided for manually actuating said stem in the guide, and means for adjustably determining the axial position of the rock shaft carrying said guide In testimony whereof I have signed my name to this specification.

JOHN M. BENJAMIN. 

